The Oxeo manifolds may only be used in accordance with system approval in stationary argon and nitrogen fire extinguishing systems. The manifolds have a maximum 5294 psi (365 bar) working pressure. Manifolds are mounted directly on the cylinder rack to connect every extinguishing agent cylinder with the pipework. The manifolds are manufactured with two and three inlets. A maximum of 18 inlets can be assembled in one row (see racking instruction in the Oxeo manuals for details). Each inlet is equipped with a check valve which releases the extinguishing agent in flow direction and prevents the flow in the opposite direction.